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Mo coordination and Thermal Stability of the Mo–Si3N4 Absorbers for Solar Selective Coatings

Published online by Cambridge University Press:  05 June 2017

C. Prieto ,
E. Céspedes ,
D. Hernández-Pinilla ,
A. Rodríguez-Palomo ,
O. Sánchez ,
F. Jiménez-Villacorta  and
E. Salas-Colera
C. Prieto*
Affiliation:
Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 - Madrid, Spain
E. Céspedes
Affiliation:
Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 - Madrid, Spain
D. Hernández-Pinilla
Affiliation:
Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 - Madrid, Spain
A. Rodríguez-Palomo
Affiliation:
Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 - Madrid, Spain
O. Sánchez
Affiliation:
Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 - Madrid, Spain
F. Jiménez-Villacorta
Affiliation:
Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 - Madrid, Spain
E. Salas-Colera
Affiliation:
Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 - Madrid, Spain Spanish CRG beamline at the European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France.
*
*(Email: [email protected])
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Abstract

The study of the chemical stability of solar selective coatings (SSC) for concentrated solar power (CSP) becomes essential for their use at high temperatures. In this paper, the short range order around Mo in Mo-Si3N4 cermets is studied for the first time by X-ray absorption spectroscopy. The information obtained by extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) spectroscopies gives new insights of the origin of the optical behavior of the cermets cermets after vacuum and air annealing treatments. The established optical and structural correlation becomes of great importance for the design and optimization of SSC for practical applications.

Keywords

thin filmoptical propertiesannealing
Type
Articles
Information
MRS Advances , Volume 2 , Issue 53: Energy Storage and Conversion , 2017 , pp. 3061 - 3068
Copyright
Copyright © Materials Research Society 2017 

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References

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